JACC:手术生物假体失败后经导管主动脉瓣置换的1年效果观察

2017-05-28 xiangting MedSci原创

手术风险高的SVF患者在自体扩张TAVR后1年的死亡率、卒中发生率低。

这项研究旨在评估自体扩张型经导管主动脉瓣置换术(TAVR)在手术瓣膜失败(SVF)患者中的安全性和有效性。对于手术风险较高的严重原发主动脉瓣狭窄患者,自体扩张TAVR优于药物治疗。

这项研究是一项前瞻性非随机研究,纳入了233例有症状SVF的患者,这些患者被认为不适合再接受手术。患者接受自体扩张TAVR治疗,并评估手术后30天和1年的疗效。使用一个独立的核心实验室评估瓣膜血流动力学和主动脉瓣反流的超声心动图。

SVF表现为狭窄(56.4%),反流(22.0%)或两者都有(21.6%)。共227例患者接受TAVR试验,225例(99.1%)患者获得了TAVR成功。患者年龄较大(76.7±10.8岁),胸外科医师预测死亡风险评分为9.0±6.7%,症状严重(纽约心功能分级Ⅲ或Ⅳ级为86.8%)。30天全因死亡率为2.2%,1年为14.6%; 30天卒中率为0.4%,1年时为1.8%。30天的3.5%的患者中发生中度主动脉瓣反流,1年时发生率为7.4%,没有严重的主动脉瓣反流。30天时新永久起搏器植入率为8.1%,1年时为11.0%。30天时平均瓣膜梯度为17.0±8.8 mm Hg,1年为16.6±8.9 mm Hg。与较高主动脉梯度压差相关的因素主要为手术瓣膜大小、SVF狭窄模式以及手术瓣膜假体不匹配(P均 <0.001)。

由此可见,手术风险高的SVF患者在自体扩张TAVR后1年的死亡率、卒中发生率低,主动脉瓣血流动力学改善显著,中度主动脉瓣反流发生率较低,生活质量得到改善。

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    2017-10-21 hbwxf
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    2018-02-25 yxch48
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    2017-05-30 lsj631
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